Slice for paper-making machines



G. S. WITHAM, .In.

SLICE FOR PAPER MAKING MACHINES.

APPLICATION FILED OCT. 5, 1921.

Patented Oct. 10, 1922.

3 $HEET$S HEET I- G. S. WITHAM, in. SLICE FOR PAPER MAKING MACHINES.

APPLICATION FILED OCT. 5, 1921. 1,431,858

7 Patented Oct. 10, 1922 3 SHEETSSHEET 2.

fiawmifimw fiaflwiifi'fimm 2 h fili 07 M 1 G. S. WITHAM, JR.

SLIGE FOR PAPER MAKING MACHINES.

APPLICATION FILED OCT. 5. 1921;

1,1,85 Patented 0%. 10,1922.

3 SHEETSSHEET 3.

Patented Get. 10, 1922. i i

warren vstares GEORGE S. WITHAMQJR, F HUDSON FALLS, NEW YORK.

SLICE non PAPER-MAKING MACHINES.

Application filed October 5, 1921. Serial No. 505,538.

To all whomitmay concern: rate of speed. Other features of the in Be it known that I, GEORGE S. WITHAM, vention will be hereinafter specified. J r., a citizen of the United States, residing In the accompanying drawings at Hudson Falls, in the county of Washing- Figure 1 is a view partly in side elevation 5 ton and State of New York, have invented and partly in section of a portion of a certain new and useful Improvements in Fourdrinier paper making machine with my Slices for Paper-Making Machines, of which improvements applied.

the following is a specification. Figure l is a detail view of portions of The object of this invention is to provide the slice mechanism, mostof the parts being 10 an improved formof slice for paper makshown in section.

ing machines, which is so constructed and Figure 2 is a plan view ofthe slice mechamay be so operated as to afford a more pernism and parts associated therewith.

fect adjustment of the machine for different Figure 3 is a perspective view of the slice kinds of stock and for varying amounts of proper with parts at the center broken away 15 stock, thereby: increasing the 'e-fliciency of and with the side wingsremoved.

the machine as a whole. Figure 3 is a section on the line 3-3 of In many paper machines ofthe Four- Figure 3. drinier type, what is known as a slice is Figure 4 is a view partly in section and employed, consisting mainly of a sheet of partly in elevationof the slice mechanism.

20 metal extending vertically over the surface Figure 5 is a perspective view of portions of the Fourdrinier wire and provided with of the slice mechanism with parts sepadevices for adjusting it vertically in such rated in order to illustrate the construction manner as to regulate the distribution of of these parts. the stuff on the wire. Figure 6 is a rear elevation of portions 25 Innone of these machines previously used, of the slice mechanism.

however, have devices been employed for The head box A is of the usual kind. It readily giving the required adjustment, and is provided with the usual apron B and the as a consequence, variations in the slowness Fourdrinier wire C extends around a breast or the freeness of the stock as'itfiows on roll D supported beneath the apron in any 30 the wire causes paper to be produced that suitable way. The deckle straps E extend lacks uniformity. It has been customary to around rollers F and operate in the usual introduce more or less water in the maway. 'A bracket F clamped to a vertical chine. or to change the position of the slice, post G supports a standardH which carries which requires of the operator both time and the slice mechanism L. The bracket F 85 labor to make adjustments on the front and may be adjusted vertically on the post G, back side of the machine. These adiustand said post G may be supported in any ments in water flow, if not carefully made, suitable way. Thedrawings. Figure 1, show cause liberation of lumps and foam from the slice proper in three different positions, the head box and at various other points renamely, in a truly vertical position and in 40 sulting in breaks or imperfections in the inclined positions in front and rear of the sheet. Moreover, it is essential. that the vertical. speed at which the stuff is delivered to the Figures 2, 3 and 4 show more clearly the wire should be as near as possible to the construction of'the slice. As shown, it'conspeed of the wire. In order to accomplish sistsof a central portion N provided with 45 these results, mechanism of special design ribsn'by which it isbraced and strengthened is required. By my improvements I have and may thus resist strain. The 1 central made it possible to introduce more water in portion is provided at each end with an adthe system to offset any variations in the justable wing O or P (Fig. 2). Each of slowness 'or freeness of'the stock, thus giving these wings overlies the central part N and 50 a good drainage area to the stock under each wing carries: set screws Q extending static pressure beforeg'oing under the slice. through slots 9 1n the slice. By these deam also enabled to furnish the same vices the slice may be widened or narrowed amount of stock to the wire-at a. far greater to the desired extent to accommodate deckle straps arranged varying distances apart. The slice N is supported by rods 'R which extend into sockets 1" in the slice and these rods R are supported by devices next to be described, by means of which the slice may be given desired adjustments.

Each rod R extends into a. sleeve 3 attached to the rod at s and each sleeve 8 carries a collar 25 having a laterally projecting finger 27. The sleeve 8 extends through a clamping member T, split at t and carrying a bolt 5 supplied with clamping nuts t t By these devices the sleeve 8 and the rod are securely clamped to the clamping member T and the turning of the rod and sleeve will be prevented after the sleeve and rodare adjusted and the nuts are screwed home. j

The clamping member T is also split at a and carries a screw U, by means of which the clamping member may be set and secured on the sleeve U (Fig. i) which rests on the flange a formed on the screw U which has a lower end a extending through the top of the standard ill. By these devices, the clamping member may be set at any desired elevation on the sleeve U and as thescrew U has a threaded connection with the sleeve U, by turning the screw delicate adjustments ma be given to the parts and thus to the slice.

The fingers t carried by the rods R and the sleeves s extend between lugs w, w on the member T, and these lugs carry adjusting screws W, l/V, by means of which the rods R and sleeves 8 may be turned in such manner as to hold the slice in either a vertical or in an inclined position.

The mechanism shown may be readily applied to various kinds of paper making machines. The parts are made strong enough to resist all strain, delicate adjustments may be given to the slice, and when the adjustments are once made, the parts are held firmly against all strains. It will be observed that the slice proper is so mounted that it is turned about ahorizontal axis, and it may also be raised bodily vertically. Nh'enthe desired vertical adjustmentjis given, more delicate adjustments may be given by moving the slice-about its horizontal axis. This varies "the position at the lower edge of the slice above the wireand it also varies the distance between the slice and the edge of the apron so as to expose a apron.

machine I am enabled to furnish the same amount of stock to the wire at a far greater rate of speed. By my improvements the nature of the stock can be changedand still maintain the proper depth oi stock in the pond or head box. Thus when the slice is placed at the forward end of the apron and stands at a previously adjusted distance from the. Fourdrinier wire, the stock will flow under a definite weight depending" on the consistency of the stock and the size of the opening under the.v slice, and if at any time the stock may become too wet, this condition may be offset by giving the slice a pivotal movement, thereby push ing the lower edge of- .the slice to a point further away from the forwardend' of the This torward'movement will increase the screening area, all of which isunder static pressure .due to the height of the stock in the pond. By the devices shown, the lower: edge of the slice may be: moved forward, thus enabling the operator to change the nature. of the stock and yet .maintain the .proper height in thepond.

out giving it a pivotal movement, or it may be adjusted about a horizontaliaxis, without any separate vertical adjustment. Achange can readily be made from light weights to extremely heavy Weights-of stock without shutting down the machine. It is only necessary to adjust certain hand nuts or set screws to give all the necessary adjustments for varying the conditions. It is well understood that when operating on free or heavy stock much more water Inust 'be handled and much more;- water must be drained fronithesur face of the wire. My improved slice makes it possible to increase the distance of the slice from the apron and todrain the water out of. the sheet at the required speed. v v

It will be understood that. the brackets F:may be so applied to the postsG that they may hold the slice mechanism at substantially the required height. In order to vary this vertical position, the screws U may be employed. These screws U give. vertical adjustment to the'asleevesU. to which the .clamping members :T are applied. bers can be given desired vertical adjustments on the sleeves by tightening and loosening the screws U, but during-the operation of the machine, the desired vertical adjustments may be given by means of the screws U -,The vpivotal or swinging ladjustments of the slice are. given by the screws WV, W. When-it is necessary to make such arrangements, the nuts i t on Furthermore, these clamping memthe screws t are loosened, thus making it of the screws W, W which engage the fingers t. After such adjustments have been made, the nuts 27*, t are tightened so that the slice will remain firmly held in the position to which it is set.

I claim as my invention:

1. A slice for paper making machines, provided with means for adjusting it vertically and with devices for adjusting it pivotally about a horizontal axis.

2. A slice for paper making machines, mounted to move about a horizontal axis and provided with devices for adjusting it about said horizontal axis and for holding it in its adjusted position.

3. A slice for paper making machines, provided with means for supporting it in prpximity to the head box and for clamping it in position in combination with means for adjusting it vertically and with other means for moving it about a horizontal axis and for holding it rigidly in its adjusted position.

4:. A slice for paper making machines, comprising a body portion mounted to move about a horizontal axis, and provided with adjustable wings at opposite ends carrying devices for holding the wings in adjusted positions.

5. A slice for paper making machines, comprising a central body portion provided with adjustable wings, means for supportingthe slice, devices for adjusting the slice vertically, and means for turning the slice about a horizontal axis and for holding it in adjgsted positions.

6. In a paper making machine, the combination with a head box, of a slice, clamp- Z members to which the slice is connected. a standard on which the clamping members are vertically adjustable, and means carried by the clamping members for adjusting the slice about a horizontal axis.

In testimony whereof, I have hereunto subscribed my name.

GEORGE S. WITHAM, JR. 

